In this Cyberchase video, Inez and Digit identify the location of the transformation using their knowledge of parallel and intersecting lines.
It's a simple review of point, line, line segment, endpoints, angles, and ruler use.
Working as a team, students discover that the value of pi (3.1415926...) is a constant and applies to all different sized circles. The team builds a basic robot and programs it to travel in a circular motion. A marker attached to the robot chassis draws a circle on the ground as the robot travels the programmed circular path. Students measure the circle's circumference and diameter and calculate pi by dividing the circumference by the diameter. They discover the pi and circumference relationship; the circumference of a circle divided by the diameter is the value of pi.
In this video segment from Cyberchase, Digit must a make a straight line between the two points and then follow the path created.
Jackie and Matt are looking at the same object along two different lines, in this video segment from Cyberchase.